using Edge.Core.Configuration;
using Edge.Core.IndustryStandardInterface.Pump;
using Edge.Core.Parser.BinaryParser.Util;
using Edge.Core.Processor;
using Edge.Core.Processor.Communicator;
using Edge.Core.Processor.Dispatcher.Attributes;
using HengShan_Pump_TQC_IFSF.MessageEntity;
using HengShan_Pump_TQC_IFSF.MessageEntity.Incoming;
using HengShan_Pump_TQC_IFSF.MessageEntity.Outgoing;
using System;
using System.Collections;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Xml;
using Wayne.FDCPOSLibrary;
using Timer = System.Timers.Timer;

namespace HengShan_Pump_TQC_IFSF
{
    /// <summary>
    /// DIT ifsf pump has some different with TQC ifsf.
    ///     1. DIT support multiple ifsf node(one fp is a node) in single communicator, thus in a pumpGroup, multiple pumps could have different ifsf node value.
    ///     2. DIT pump's fuel product code is specified in a pump side.
    ///        further more, there're 2 types of DIT, one can change code by web page, another one, looks pretty much the same as 
    ///        TCP IFSF TQC, could not support web page config, then have to do it at the dispenser keyboard, the FCC could not change it,
    ///        sometimes, though the request and response can go through, actually no change in pump side. 
    ///        thus, need align FCC's product config before run FCC.
    /// </summary>
    [MetaPartsRequired(typeof(GenericDeviceProcessor<,>))]
    [MetaPartsRequired(typeof(HengShan_TQC_IFsfMessageTcpIpCommunicator<>))]
    [MetaPartsRequired(typeof(IfsfMessageBase))]
    [MetaPartsDescriptor(
        "lang-zh-cn:HS DIT TQC加油机lang-en-us:HS DIT TQC pump",
        "lang-zh-cn:用于驱动基于TCP连接的IFSF协议的 恒山-DIT 加油机lang-en-us:Used for driven HengShan-DIT dispensers which using IFSF protocol on TCP",
        new[] { "lang-zh-cn:加油机lang-en-us:Pump" })]
    public class DitPumpGroupHandler : IEnumerable<IFdcPumpController>, IDeviceHandler<byte[], IfsfMessageBase>
    {

        #region Ctor parameters

        public class PumpGroupConfiguration
        {
            //public byte AmountDecimalDigits { get; set; }
            //public byte VolumeDecimalDigits { get; set; }
            //public byte PriceDecimalDigits { get; set; }
            //public byte VolumeTotalizerDecimalDigits { get; set; }
            public byte FccIfsfSubnetValue { get; set; }
            public byte FccIfsfNodeValue { get; set; }

            /// <summary>
            /// all pumps in this group share one SubNet value
            /// </summary>
            public byte PumpGroupIfsfSubnetValue { get; set; }


            public List<PumpConfiguration> PumpConfigurations { get; set; }
        }

        public class PumpConfiguration
        {
            public byte PumpIfsfNodeValue { get; set; }

            public byte PumpId { get; set; }

            /// <summary>
            /// 0x21 - 0x24
            /// </summary>
            public byte PhysicalId { get; set; }

            public List<NozzleConfiguration> NozzleConfigurations { get; set; }
        }

        public class NozzleConfiguration
        {
            public byte LogicalId { get; set; }
            /// <summary>
            /// 0x11 - 0x18
            /// </summary>
            public byte PhysicalId { get; set; }
        }

        #endregion

        private object syncObject = new object();
        private Guid uniqueId = Guid.NewGuid();
        private IEnumerable<NozzleExtraInfo> nozzleExtraInfos;
        /// <summary>
        /// Each ifsf node device need a standalone initializer.
        /// </summary>
        internal IEnumerable<TqcPumpGroupInitializerSimple> tqcPumpGroupInitializers;
        //protected static ILog logger = log4net.LogManager.GetLogger("PumpHandler");
        protected static NLog.Logger logger = NLog.LogManager.LoadConfiguration("nlog.config").GetLogger("PumpHandler");

        protected IContext<byte[], IfsfMessageBase> context;
        protected List<DitPumpHandler> pumpHandlers = new List<DitPumpHandler>();

        /// <summary>
        /// the pump side ifsf Subnet value.
        /// </summary>
        protected byte recipientSubnet = 1;

        /// <summary>
        /// the pump side ifsf Node values under this PumpGroup.
        /// </summary>
        protected List<byte> recipientNodes = new List<byte>();

        /// <summary>
        /// ifsf subnet value for FCC.
        /// </summary>
        public static byte originatorSubnet = 2;

        /// <summary>
        /// Ifsf node value for FCC.
        /// </summary>
        public static byte originatorNode = 1;

        [ParamsJsonSchemas("DitPumpGroupHandlerCtorParamsJsonSchemas")]
        public DitPumpGroupHandler(PumpGroupConfiguration pumpGroupConfiguration, IServiceProvider services)
        {
            originatorSubnet = pumpGroupConfiguration.FccIfsfSubnetValue;
            originatorNode = pumpGroupConfiguration.FccIfsfNodeValue;
            this.recipientSubnet = pumpGroupConfiguration.PumpGroupIfsfSubnetValue;
            this.recipientNodes.AddRange(pumpGroupConfiguration.PumpConfigurations.Select(pc => pc.PumpIfsfNodeValue));

            logger.Info("node " + this.recipientNodes.Select(n => n.ToString()).Aggregate((acc, n) => acc + ", " + n) + ", Will create " + pumpGroupConfiguration.PumpConfigurations.Count
                + " pump handlers for this TQC connection according from pumpGroupConfiguration");
            this.CreatePumpHandlers(pumpGroupConfiguration);
        }

        /// <summary>
        /// 
        /// </summary>
        /// <param name="pumpsXmlConfiguration"></param>
        public DitPumpGroupHandler(int fccIfsfSubnetValue, int fccIfsfNodeValue, string pumpsXmlConfiguration)
        {
            originatorSubnet = (byte)fccIfsfSubnetValue;
            originatorNode = (byte)fccIfsfNodeValue;

            // sample, a PumpGroup has a shared(for all pumps) ifsfSubNet value, each pump has an ifsfNode value
            //<PumpGroup ifsfSubNet='1'>
            //	<Pump id='1' physicalId='0x21' ifsfNode='6'>
            //		<Nozzles>
            //			<Nozzle logicalId='1' physicalId='0x11' />
            //			<Nozzle logicalId='2' physicalId='0x12' />
            //		</Nozzles>
            //	</Pump>
            //	<Pump id='2' physicalId='0x22' ifsfNode='5'>
            //		<Nozzles>
            //			<Nozzle logicalId='1' physicalId='0x11' />
            //			<Nozzle logicalId='2' physicalId='0x12' "/>
            //		</Nozzles>
            //	</Pump>
            //	<Pump id='3' physicalId='0x23' ifsfNode='3'>
            //		<Nozzles>
            //			<Nozzle logicalId='1' physicalId='0x13' />
            //			<Nozzle logicalId='2' physicalId='0x14' />
            //		</Nozzles>
            //	</Pump>
            //	<Pump id='4' physicalId='0x24' ifsfNode='2'>
            //		<Nozzles>
            //			<Nozzle logicalId='1' physicalId='0x15' />
            //			<Nozzle logicalId='2' physicalId='0x16' />
            //		</Nozzles>
            //	</Pump>
            //</PumpGroup>
            XmlDocument xmlDocument = new XmlDocument();
            xmlDocument.LoadXml(pumpsXmlConfiguration);
            var pumpGroupElement = xmlDocument.GetElementsByTagName("PumpGroup").Cast<XmlElement>().First();
            this.recipientSubnet = byte.Parse(pumpGroupElement.Attributes["ifsfSubNet"].Value);
            var pumpElements = xmlDocument.GetElementsByTagName("Pump");
            foreach (var pumpXmlNode in pumpElements.Cast<XmlNode>())
                if (pumpXmlNode.Attributes["ifsfNode"] != null)
                {
                    this.recipientNodes.Add(byte.Parse(pumpXmlNode.Attributes["ifsfNode"].Value));
                }
                else
                    throw new ArgumentNullException("Must specify attribute: 'ifsfNode' for each pump XmlNode");

            logger.Info("node " + this.recipientNodes.Select(n => n.ToString()).Aggregate((acc, n) => acc + ", " + n) + ", Will create " + pumpElements.Count
                + " pump handlers for this TQC connection according from local config");
            this.CreatePumpHandlers(pumpElements);
        }

        protected virtual void CreatePumpHandlers(XmlNodeList pumpElements)
        {
            foreach (XmlNode pumpElement in pumpElements)
            {
                byte pumpPhysicalIdValue;
                var rawPumpPhysicalId = pumpElement.Attributes["physicalId"].Value;//.Substring(2);
                if (rawPumpPhysicalId.StartsWith("0x") || rawPumpPhysicalId.StartsWith("0X"))
                    pumpPhysicalIdValue = byte.Parse(pumpElement.Attributes["physicalId"].Value.Substring(2), NumberStyles.HexNumber);
                else
                    pumpPhysicalIdValue = byte.Parse(pumpElement.Attributes["physicalId"].Value);
                if (pumpPhysicalIdValue < 0x21 || pumpPhysicalIdValue > 0x24)
                    throw new ArgumentException("ifsf fuel point id must be range from 0x21 to 0x24, while the configuration passed in " + rawPumpPhysicalId);
                DitPumpHandler pumpHandler = new DitPumpHandler(this,
                    int.Parse(pumpElement.Attributes["pumpId"].Value),
                    pumpPhysicalIdValue,
                    this.recipientSubnet,
                    byte.Parse(pumpElement.Attributes["ifsfNode"].Value),
                    pumpElement.InnerXml, GetNewMessageToken);
                this.pumpHandlers.Add(pumpHandler);
            }
        }

        protected virtual void CreatePumpHandlers(PumpGroupConfiguration pumpGroupConfiguration)
        {
            foreach (var pumpConfig in pumpGroupConfiguration.PumpConfigurations)
            {
                DitPumpHandler pumpHandler = new DitPumpHandler(this,
                    pumpConfig.PumpId,
                    pumpConfig.PhysicalId,
                    this.recipientSubnet,
                    pumpConfig.PumpIfsfNodeValue,
                    pumpConfig.NozzleConfigurations,
                    GetNewMessageToken);
                this.pumpHandlers.Add(pumpHandler);
            }
        }

        /// <summary>
        ///  will be called at the Init stage of FdcServerApp, that means before the calling the Start() for all the Processors.
        /// </summary>
        /// <param name="parameters"></param>
        public void OnFdcServerInit(Dictionary<string, object> parameters)
        {
            if (parameters != null && parameters.TryGetValue("NozzleProductMapping", out object param))
            {
                this.nozzleExtraInfos = param as IEnumerable<NozzleExtraInfo>;
            }

            this.tqcPumpGroupInitializers = this.recipientNodes.Select(rcpNodeValue =>
            {
                var phs = this.pumpHandlers.Where(ph => ph.recipientNode == rcpNodeValue);
                logger.Info("Creating a TqcPumpGroupInitializer for node: " + rcpNodeValue
                    + ", managed pump Id(s): " + phs.Select(ph => ph.PumpId.ToString()).Aggregate((acc, n) => acc + ", " + n));
                var initor = new TqcPumpGroupInitializerSimple(this.nozzleExtraInfos, originatorSubnet, originatorNode,
                    this.recipientSubnet, rcpNodeValue, phs, this.GetNewMessageToken);
                initor.OnInitTimeout += (cc, dd) =>
                {

                };
                initor.OnInitDone += (ee, ff) =>
                {

                };
                //logger.Info("   created a TqcPumpGroupInitializer for node: " + rcpNodeValue);
                return initor;
            }).ToList();
            this.pumpHandlers.ForEach(ph => ph.OnFdcServerInit(parameters));
        }

        public virtual void Init(IContext<byte[], IfsfMessageBase> context)
        {
            this.context = context;
            bool isCommConnected = false;
            this.context.Communicator.OnConnected += async (e, f) =>
            {
                var comm = context.Communicator as HengShan_TQC_IFsfMessageTcpIpCommunicator<IfsfMessageBase>;
                logger.Info("TqcPumpGroupInitializer, Communicator Connected(to pump server: " + (comm?.pumpServerTcpListeningIpAddress ?? "") + "), will start init each Initializer...");
                isCommConnected = true;
                foreach (var initor in this.tqcPumpGroupInitializers)
                {
                    while (isCommConnected)
                    {
                        initor.Reset();
                        if (initor.CurrentStatus == TqcPumpGroupInitializerSimple.Status.UnInit)
                            initor.FeedIn(this.context);
                        else
                            logger.Info("TqcPumpGroupInitializer, node " + initor.ifsfRecipientNode + " is already in a initing process, just wait for finish...");
                        // may refine in future for wait the init Done event.
                        var initResult = await initor.InitDoneTaskCompletionSource.Task;
                        if (initResult)
                        {
                            logger.Info("TqcPumpGroupInitializer, node " + initor.ifsfRecipientNode + ", init done, will query all FP status and routed following msg to PumpHandlers");
                            // query all FP status, answer will be routed to each PumpHandler to handle.
                            this.context.Outgoing.Write(
                                new FuellingPointDbRequest_Read_FuelPointState(
                                    this.recipientSubnet,
                                    initor.ifsfRecipientNode,
                                    originatorSubnet,
                                    originatorNode,
                                    this.GetNewMessageToken(),
                                    0x20));

                            //var nozzleProductConfig
                            //        = Configurator.Default.NozzleExtraInfoConfiguration.Mapping;
                            initor.pumpHandlers.SelectMany(p => p.Nozzles).ToList().ForEach(n =>
                            {
                                var boundProductNo = this.nozzleExtraInfos.First(c => c.PumpId == n.PumpId && c.NozzleLogicalId == n.LogicalId).ProductBarcode;
                                logger.Info("TqcPumpGroupInitializer, node " + initor.ifsfRecipientNode
                                    + ", will write back price to nozzle on pump " + n.PumpId + ", logicalNozzleId: " + n.LogicalId + ", boundProductNo: " + boundProductNo
                                    + " to new Init Price(without decimal points): " + initor.PriceBook[boundProductNo]);
                                n.RealPriceOnPhysicalPump = initor.PriceBook[boundProductNo];
                            });
                            break;
                        }
                        else
                        {
                            logger.Info("TqcPumpGroupInitializer, node " + initor.ifsfRecipientNode + ", init timed out, will start it over...");
                            //initor.Reset();
                            //initor.FeedIn(this.context);
                        }
                    }
                }
            };
            this.context.Communicator.OnDisconnected += (e, f) =>
            {
                var comm = context.Communicator as HengShan_TQC_IFsfMessageTcpIpCommunicator<IfsfMessageBase>;
                logger.Info("TqcPumpGroupInitializer, Communicator Disconnected(to pump server: " + (comm?.pumpServerTcpListeningIpAddress ?? "") + ")...");
                foreach (var initor in this.tqcPumpGroupInitializers)
                {
                    initor.Reset();
                    isCommConnected = false;
                    initor.pumpHandlers.ToList().ForEach(p => p.HandleFpStatusChange(FuellingPointStatus.Inoperative, null));
                }
            };
            this.pumpHandlers.ForEach(p => p.Init(this.context));
        }

        private byte rotateMsgToken = 0;
        public byte GetNewMessageToken()
        {
            if (rotateMsgToken == (0xFF & 0x01F))
                rotateMsgToken = 0;
            else
                rotateMsgToken++;
            return rotateMsgToken;
        }

        public virtual Task Process(IContext<byte[], IfsfMessageBase> context)
        {
            this.context = context;
            var initor = this.tqcPumpGroupInitializers?.FirstOrDefault(i => i.ifsfRecipientNode == context.Incoming.Message.OriginatorNode);
            if (initor == null)
            {
                // must has initor created first
                return Task.CompletedTask;
            }

            if (!initor.IsInitDone)
            {
                initor.FeedIn(context);
                return Task.CompletedTask;
            }

            this.RouteMessageToHandlers(context);
            return Task.CompletedTask;
        }

        protected virtual void RouteMessageToHandlers(IContext<byte[], IfsfMessageBase> context)
        {
            switch (context.Incoming.Message)
            {
                case FuellingPointDb_FpStatus_Event fpStatusEvent:
                    this.pumpHandlers.Where(h => h.PumpPhysicalId == fpStatusEvent.TargetFuelPointId
                        && h.recipientNode == fpStatusEvent.OriginatorNode).ToList().ForEach(p => p.Process(context));
                    break;
                case FuellingPointDb_FpStatus_Answer fpStatusAnswer:
                    this.pumpHandlers.Where(h => h.PumpPhysicalId == fpStatusAnswer.TargetFuelPointId
                        && h.recipientNode == fpStatusAnswer.OriginatorNode).ToList().ForEach(p => p.Process(context));
                    break;
                case FuellingPointDb_FpRunningTransaction_Event fpRunningTrxEvent:
                    this.pumpHandlers.Where(h => h.PumpPhysicalId == fpRunningTrxEvent.TargetFuelPointId
                        && h.recipientNode == fpRunningTrxEvent.OriginatorNode).ToList().ForEach(p => p.Process(context));
                    break;
                case FuellingPointDb_FpRunningTransaction_Event_ACK fpRunningTrxEvent:
                    this.pumpHandlers.Where(h => h.PumpPhysicalId == fpRunningTrxEvent.TargetFuelPointId
                        && h.recipientNode == fpRunningTrxEvent.OriginatorNode).ToList().ForEach(p => p.Process(context));
                    break;
                case FuellingTrxDb_TransactionBufferStatus_Event trxBufferStatusEvent:
                    this.pumpHandlers.Where(h => h.PumpPhysicalId == trxBufferStatusEvent.TargetFuelPointId
                        && h.recipientNode == trxBufferStatusEvent.OriginatorNode).ToList().ForEach(p => p.Process(context));
                    break;
                case FuellingTrxDb_TransactionBufferStatus_Event_ACK trxBufferStatusEvent:
                    this.pumpHandlers.Where(h => h.PumpPhysicalId == trxBufferStatusEvent.TargetFuelPointId
                        && h.recipientNode == trxBufferStatusEvent.OriginatorNode).ToList().ForEach(p => p.Process(context));
                    break;
                case FuellingTrxDb_TransactionBufferStatus_Answer trxBufferStatusAnswer:
                    this.pumpHandlers.Where(h => h.PumpPhysicalId == trxBufferStatusAnswer.TargetFuelPointId
                        && h.recipientNode == trxBufferStatusAnswer.OriginatorNode).ToList().ForEach(p => p.Process(context));
                    break;
                    //default: this.pumpHandlers.ForEach(p => p.Process(context)); break;
            }
        }

        public IEnumerator<IFdcPumpController> GetEnumerator()
        {
            return this.pumpHandlers.GetEnumerator();
        }

        IEnumerator IEnumerable.GetEnumerator()
        {
            return this.pumpHandlers.GetEnumerator();
        }

        public Guid Id => this.uniqueId;

        internal class TqcPumpGroupInitializerSimple
        {
            System.Timers.Timer initTimeoutTimer = new Timer(initTimeout);
            const int initTimeout = 10000;

            /// <summary>
            /// will fire when reached timed out time, and state is still not Done.
            /// </summary>
            public event EventHandler OnInitTimeout;

            /// <summary>
            /// false indicates init timed out, true indicates init done successfully.
            /// </summary>
            public TaskCompletionSource<bool> InitDoneTaskCompletionSource = new TaskCompletionSource<bool>();
            public event EventHandler OnInitDone;

            /// <summary>
            /// init process will firstly read all necessary config values in TQC, and then execute the write operations.
            /// this event will be fired once those config values were read, and write operation is still not perform.
            /// </summary>
            public event EventHandler OnTqcExistedConfigRead;
            private List<FuellingPointDb_FpStatus_Answer> fpStatus_Answers
                = new List<FuellingPointDb_FpStatus_Answer>();

            private List<LogicalNozzleDb_Nozzle_ProductInfo_PhyId_Answer> logicalNozzleDb_Nozzle_ProductInfo_PhyId_Answers
                = new List<LogicalNozzleDb_Nozzle_ProductInfo_PhyId_Answer>();
            /// <summary>
            /// Gets pre-config value in TQC pump.
            /// </summary>
            public IEnumerable<LogicalNozzleDb_Nozzle_ProductInfo_PhyId_Answer> LogicalNozzleDb_Nozzle_ProductInfo_PhyId_Answers => this.logicalNozzleDb_Nozzle_ProductInfo_PhyId_Answers;

            private List<ProductDb_ProductNo_Answer> productDb_ProductNo_Answers
                = new List<ProductDb_ProductNo_Answer>();
            /// <summary>
            /// Gets pre-config value in TQC pump.
            /// </summary>
            public IEnumerable<ProductDb_ProductNo_Answer> ProductDb_ProductNo_Answers => this.productDb_ProductNo_Answers;


            private List<ProductPerFuellingModeDb_ProductPrice_Answer> productPerFuellingModeDb_ProductPrice_Answers
                = new List<ProductPerFuellingModeDb_ProductPrice_Answer>();
            /// <summary>
            /// Gets pre-config value in TQC pump.
            /// </summary>
            public IEnumerable<ProductPerFuellingModeDb_ProductPrice_Answer> ProductPerFuellingModeDb_ProductPrice_Answers => this.productPerFuellingModeDb_ProductPrice_Answers;


            private Dictionary<int, int> priceBook = new Dictionary<int, int>();
            /// <summary>
            /// Gets or set the init price for each product.
            /// default price init policy is read from pricebook, if found then apply, otherwise use pre-config value read from pump.
            /// should follow->  barcode:rawFormatPriceWithoutDecimalPoints
            /// </summary>
            public Dictionary<int, int> PriceBook => this.priceBook;

            private byte ifsfSelfSubnet;
            private byte ifsfSelfNode;
            private byte ifsfRecipientSubnet;
            public byte ifsfRecipientNode;
            public IEnumerable<DitPumpHandler> pumpHandlers;
            Func<byte> msgTokenGenerator;
            private List<int> thisTqcProductBarcodes;

            private Status currentStatus;
            public Status CurrentStatus
            {
                get { return this.currentStatus; }
                private set
                {
                    //logger.Debug("PumpInitializer, node " + ifsfRecipientNode + ", Status switched from " + this.currentStatus + " to " + value);
                    this.currentStatus = value;
                }
            }
            //private DateTime previousRequestingTime;
            private byte? pendingForAckMsgToken;
            public enum Status
            {
                UnInit = 0,
                Wait_Answer_Query_All_FuelPointState,
                Wait_Answer_Close_All_FuelPoint,
                Wait_Answer_Query_Caculator_Overall_Info,
                Wait_Answer_Read_All_Nozzle_ProductInfo_PhyId,
                Wait_Answer_Read_All_ProductNumber,
                Wait_Answer_Read_All_ProductPrice,
                //Sending_Add_Recipient_Addr,
                Wait_ACK_Add_Recipient_Addr,
                //Sending_Clear_ProductNumber_In_Caculator,
                Wait_ACK_Clear_ProductNumber_In_ProductDb,
                //Sending_Set_ProductNumber_In_Caculator,
                Wait_ACK_Set_ProductNumber_In_ProductDb,
                //Sending_Link_Meter_To_CaculatorSlot,
                Wait_ACK_Link_Meter_To_ProductDb_ProductNoSlot,
                //Sending_Set_AUTH_MODE,
                Wait_ACK_Set_AUTH_MODE,
                //Sending_Set_Price,
                Wait_ACK_Set_Price,
                //Sending_Set_Nozzle_To_CacalatorSlot,
                Wait_ACK_Set_Nozzle_To_ProductDb_ProductNoSlot,
                //Sending_Set_FP_Default_FuellingMode,
                Wait_ACK_Set_FP_Default_FuellingMode,
                //Send_Open_FP,
                //Wait_ACK_Open_FP,
                Done
            }


            /// <summary>
            /// 
            /// </summary>
            /// <param name="selfSubnet">fc ifsf subnet value</param>
            /// <param name="selfNode">fc ifsf node value</param>
            /// <param name="ifsfRecipientSubnet">remote ifsf recipient subnet value</param>
            /// <param name="ifsfRecipientNode">remote ifsf recipient node value</param>
            /// <param name="pumpHandlers">pump handlers created from the pump Group handler</param>
            /// <param name="msgTokenGenerator"></param>
            public TqcPumpGroupInitializerSimple(IEnumerable<NozzleExtraInfo> nozzleExtraInfos, byte selfSubnet, byte selfNode, byte ifsfRecipientSubnet, byte ifsfRecipientNode,
                IEnumerable<DitPumpHandler> pumpHandlers, Func<byte> msgTokenGenerator)
            {
                this.ifsfSelfSubnet = selfSubnet;
                this.ifsfSelfNode = selfNode;
                this.ifsfRecipientSubnet = ifsfRecipientSubnet;
                this.ifsfRecipientNode = ifsfRecipientNode;

                this.pumpHandlers = pumpHandlers;
                this.msgTokenGenerator = msgTokenGenerator;
                this.thisTqcProductBarcodes =
                    pumpHandlers.SelectMany(ph => ph.Nozzles)
                        .Select(n => nozzleExtraInfos.FirstOrDefault(npc => npc.PumpId == n.PumpId && npc.NozzleLogicalId == n.LogicalId)?.ProductBarcode)
                        .Where(n => n != null).Select(n => n.Value).Distinct().OrderBy(o => o).ToList();
                //this.thisTqcProductBarcodes = nozzleProductConfig.Select(s => s.ProductBarcode).Distinct().OrderBy(o => o).ToList();
                logger.Info("PumpInitializer, node " + ifsfRecipientNode + " current TQC local configuration indicates total have "
                    + this.thisTqcProductBarcodes.Count + " product barcodes: " + this.thisTqcProductBarcodes.Select(s => s.ToString()).Aggregate((acc, n) => acc + ", " + n));
                this.initTimeoutTimer.Elapsed += (a, b) =>
                {
                    this.initTimeoutTimer.Stop();
                    if (!this.IsInitDone)
                    {
                        this.InitDoneTaskCompletionSource.SetResult(false);
                        var safe = this.OnInitTimeout;
                        safe(this, null);
                    }
                };
            }

            private byte next_ActualInPump_ProductNumber_In_ProductDb_ProductNoSlot_Index = 1;
            private byte next_Clear_ProductNumber_In_ProductDb_ProductNoSlot_Index = 1;
            //private byte next_Link_Meter_to_ProductNumber_Index = 1;
            private byte next_site_nozzle_Index = 1;

            private byte next_Fp_Index = 1;

            /// <summary>
            /// if it was Done, return false.  otherwise, the init is kicking off, return true.
            /// </summary>
            /// <param name="context"></param>
            /// <returns></returns>
            public bool FeedIn(IContext<byte[], IfsfMessageBase> context)
            {
                var comm = context.Communicator as HengShan_TQC_IFsfMessageTcpIpCommunicator<IfsfMessageBase>;
                if (!this.initTimeoutTimer.Enabled) this.initTimeoutTimer.Start();
                if (IsInitDone) return false;
                switch (this.CurrentStatus)
                {
                    case Status.UnInit:
                        {
                            logger.Info("PumpInitializerSimple, node " + ifsfRecipientNode + " start Init(to pump server: " + (comm?.pumpServerTcpListeningIpAddress ?? "") + "), firstly Query_Caculator_Overall_Info...");

                            this.next_Fp_Index = 1;
                            logger.Info("PumpInitializer, node " + ifsfRecipientNode + " sending CaculatorDbRequest_Read_FuelPoint_Product_FuelMode_Meter_Info...");
                            this.pendingForAckMsgToken = this.msgTokenGenerator();
                            context.Outgoing.Write(
                                new CaculatorDbRequest_Read_FuelPoint_Product_FuelMode_Meter_Info(this.ifsfRecipientSubnet,
                                    this.ifsfRecipientNode,
                                    this.ifsfSelfSubnet,
                                    this.ifsfSelfNode,
                                    this.pendingForAckMsgToken.Value
                                   ));
                            this.CurrentStatus = Status.Wait_Answer_Query_Caculator_Overall_Info;

                            break;
                        }
                    case Status.Wait_Answer_Query_Caculator_Overall_Info:
                        {
                            if (context.Incoming.Message is IfsfMessage ifsfMsg && ifsfMsg.MessageType == MessageType.IFSF_MESSAGE_TYPE_ANSWER
                                    && ifsfMsg.MessageToken == this.pendingForAckMsgToken)
                            {
                                var dataParser = DatabaseDataParser.New().Convert(ifsfMsg.RawDatabaseData.ToArray());
                                var numberOfProducts = dataParser.DataIds.First(i => i.Item1 == 0x02).Item2.ToInt32();
                                logger.Info("PumpInitializer, node " + ifsfRecipientNode + " CaculatorDbRequest_Read_FuelPoint_Product_FuelMode_Meter_Info Acked,\r\n" +
                                    "Read caculatorDbOverallInfo, No_Products: " + numberOfProducts
                                    + ", No_Fuelling_Modes: " + dataParser.DataIds.First(i => i.Item1 == 0x03).Item2.ToInt32()
                                    + ", No_Meters: " + (dataParser.DataIds.FirstOrDefault(i => i.Item1 == 0x04)?.Item2?.ToInt32() ?? -1)
                                    + ", No_FP: " + dataParser.DataIds.First(i => i.Item1 == 0x05).Item2.ToInt32()
                                    + ", Auth_State_Mode: " + dataParser.DataIds.First(i => i.Item1 == 0x0B).Item2.ToInt32());
                                if (numberOfProducts != this.thisTqcProductBarcodes.Count)
                                {
                                    logger.Info("!!!!!!PumpInitializer, node " + ifsfRecipientNode + " This TQC MUST config " + numberOfProducts + " products, but now trying to load local config with " + this.thisTqcProductBarcodes.Count + " products");
                                }

                                logger.Info("PumpInitializer, node " + ifsfRecipientNode + " Send LogicalNozzleDb_Read_Nozzle_ProductInfo_PhyId for FP: 0x"
                                    + pumpHandlers.ElementAt(next_Fp_Index - 1).PumpPhysicalId.ToHexLogString());
                                this.pendingForAckMsgToken = this.msgTokenGenerator();
                                context.Outgoing.Write(
                                    new LogicalNozzleDb_Read_Nozzle_ProductInfo_PhyId(this.ifsfRecipientSubnet,
                                          this.ifsfRecipientNode,
                                          this.ifsfSelfSubnet,
                                          this.ifsfSelfNode,
                                          this.pendingForAckMsgToken.Value, (byte)(pumpHandlers.ElementAt(next_Fp_Index - 1).PumpPhysicalId), 0x10));
                                this.CurrentStatus = Status.Wait_Answer_Read_All_Nozzle_ProductInfo_PhyId;
                            }

                            break;
                        }
                    case Status.Wait_Answer_Read_All_Nozzle_ProductInfo_PhyId:
                        {
                            if (context.Incoming.Message is IfsfMessage ifsfMsg && ifsfMsg.MessageType == MessageType.IFSF_MESSAGE_TYPE_ANSWER
                               && ifsfMsg.MessageToken == this.pendingForAckMsgToken.Value)
                            {
                                var historyIncoming = context.Incoming as HistoryKeepIncoming<IfsfMessageBase>;
                                this.logicalNozzleDb_Nozzle_ProductInfo_PhyId_Answers.AddRange(
                                    historyIncoming.History.Where(h => (h.Item1 is LogicalNozzleDb_Nozzle_ProductInfo_PhyId_Answer im)
                                        && im.MessageType == MessageType.IFSF_MESSAGE_TYPE_ANSWER
                                        && im.MessageToken == this.pendingForAckMsgToken)
                                            .Select(s => s.Item1 as LogicalNozzleDb_Nozzle_ProductInfo_PhyId_Answer).OrderBy(a => a.LogicalNozzleId));

                                if (++next_Fp_Index <= pumpHandlers.Count())
                                {
                                    logger.Info("PumpInitializer, node " + ifsfRecipientNode + " LogicalNozzleDb_Read_Nozzle_ProductInfo_PhyId Acked");
                                    logger.Info("PumpInitializer, node " + ifsfRecipientNode + " Send LogicalNozzleDb_Read_Nozzle_ProductInfo_PhyId for FP: 0x"
                                        + pumpHandlers.ElementAt(next_Fp_Index - 1).PumpPhysicalId.ToHexLogString());
                                    this.pendingForAckMsgToken = this.msgTokenGenerator();
                                    context.Outgoing.Write(
                                        new LogicalNozzleDb_Read_Nozzle_ProductInfo_PhyId(this.ifsfRecipientSubnet,
                                              this.ifsfRecipientNode,
                                              this.ifsfSelfSubnet,
                                              this.ifsfSelfNode,
                                              this.pendingForAckMsgToken.Value, (byte)(pumpHandlers.ElementAt(next_Fp_Index - 1).PumpPhysicalId), 0x10));
                                    this.CurrentStatus = Status.Wait_Answer_Read_All_Nozzle_ProductInfo_PhyId;
                                }
                                else
                                {
                                    foreach (var answer in this.logicalNozzleDb_Nozzle_ProductInfo_PhyId_Answers)
                                        logger.Info("       node " + ifsfRecipientNode + " Read nozzles info for FP: 0x" + answer.TargetFuelPointId.ToHexLogString()
                                            + ", with logicalId: 0x" + answer.LogicalNozzleId.ToHexLogString()
                                            + ", with physicalId: 0x" + answer.PhyscialNozzleId.ToHexLogString()
                                            + ", with product slotId: 0x" + answer.LinkedProductSlotId_InProductDbProdcutNoSlot.ToHexLogString());

                                    next_Fp_Index = 1;

                                    logger.Info("PumpInitializer, node " + ifsfRecipientNode + " sending ProductDbRequest_Read_ProductNo");
                                    this.pendingForAckMsgToken = this.msgTokenGenerator();
                                    // will receive several answers and an ACK messages since this is a query all request.
                                    context.Outgoing.Write(new ProductDbRequest_Read_ProductNo(this.ifsfRecipientSubnet,
                                                  this.ifsfRecipientNode,
                                                  this.ifsfSelfSubnet,
                                                  this.ifsfSelfNode,
                                                  this.pendingForAckMsgToken.Value, 0));
                                    this.CurrentStatus = Status.Wait_Answer_Read_All_ProductNumber;
                                }
                            }
                            break;
                        }
                    case Status.Wait_Answer_Read_All_ProductNumber:
                        {
                            if (context.Incoming.Message is IfsfMessage ifsfMsg && ifsfMsg.MessageType == MessageType.IFSF_MESSAGE_TYPE_ANSWER
                                    && ifsfMsg.MessageToken == this.pendingForAckMsgToken)
                            {
                                var historyIncoming = context.Incoming as HistoryKeepIncoming<IfsfMessageBase>;
                                //logger.Debug("************" + historyIncoming.History.Select(a => a.Item1.GetType().Name).Aggregate((acc, n) => acc + ", " + n));
                                //logger.Debug("************historyIncoming.History.Count: " + historyIncoming.History.Count);
                                this.productDb_ProductNo_Answers.AddRange(
                                    historyIncoming.History.Where(h => (h.Item1 is ProductDb_ProductNo_Answer im)
                                        && im.MessageType == MessageType.IFSF_MESSAGE_TYPE_ANSWER
                                        && im.MessageToken == this.pendingForAckMsgToken).Select(s => s.Item1 as ProductDb_ProductNo_Answer).OrderBy(a => a.ProductSlotId));
                                if (this.productDb_ProductNo_Answers.Any())
                                {
                                    logger.Info("       node " + ifsfRecipientNode + " Read all existed product number in a TQC which are: " + this.productDb_ProductNo_Answers.Select(s => s.ProductNumber + "(in 0x" + s.ProductSlotId.ToHexLogString() + ")").Aggregate((acc, n) => acc + ", " + n));
                                    string actualProductNumber = this.productDb_ProductNo_Answers.ElementAt(this.next_ActualInPump_ProductNumber_In_ProductDb_ProductNoSlot_Index - 1).ProductNumber;//this.siteProductBarcodes[next_Clear_ProductNumber_In_Caculator_SlotIndex - 1].ToString();
                                    this.pendingForAckMsgToken = this.msgTokenGenerator();
                                    // each Product will receive a serial of answers for its differnt FuelMode since we input 0x10 as query all FM.
                                    context.Outgoing.Write(new ProductPerFuellingModeDbRequest_Read_ProductPrice(this.ifsfRecipientSubnet,
                                                  this.ifsfRecipientNode,
                                                  this.ifsfSelfSubnet,
                                                  this.ifsfSelfNode,
                                                  this.pendingForAckMsgToken.Value, actualProductNumber, 0x11));
                                    this.CurrentStatus = Status.Wait_Answer_Read_All_ProductPrice;
                                }
                                else
                                {
                                    /* TQC without any product configed, happened for fresh new TQC pump (get hardware reset or just shipped from factory??), handle here */
                                    logger.Info("   node " + ifsfRecipientNode + " has no ProductDb_ProductNo_Answer received, seems there're no product configurated in this TQC yet, will directly Clear Set_ProductNumber_In_ProductDb");
                                    logger.Info("PumpInitializer, node " + ifsfRecipientNode + " sending Clear ProductNumber in ProductDb slot index: " + next_Clear_ProductNumber_In_ProductDb_ProductNoSlot_Index);

                                    this.pendingForAckMsgToken = this.msgTokenGenerator();
                                    context.Outgoing.Write(
                                          new ProductDbRequest_Write_SetProductNumber(this.ifsfRecipientSubnet,
                                              this.ifsfRecipientNode,
                                              this.ifsfSelfSubnet,
                                              this.ifsfSelfNode,
                                              this.pendingForAckMsgToken.Value,
                                              next_Clear_ProductNumber_In_ProductDb_ProductNoSlot_Index, null));
                                    this.CurrentStatus = Status.Wait_ACK_Set_ProductNumber_In_ProductDb;
                                }
                            }

                            break;
                        }
                    case Status.Wait_Answer_Read_All_ProductPrice:
                        {
                            if (context.Incoming.Message is IfsfMessage ifsfMsg && ifsfMsg.MessageType == MessageType.IFSF_MESSAGE_TYPE_ANSWER
                                   && ifsfMsg.MessageToken == this.pendingForAckMsgToken.Value)
                            {
                                var historyIncoming = context.Incoming as HistoryKeepIncoming<IfsfMessageBase>;
                                var resultSetsForOneProduct = historyIncoming.History.Where(h => (h.Item1 is ProductPerFuellingModeDb_ProductPrice_Answer im)
                                         && im.MessageType == MessageType.IFSF_MESSAGE_TYPE_ANSWER
                                         && im.MessageToken == this.pendingForAckMsgToken).Select(s => s.Item1 as ProductPerFuellingModeDb_ProductPrice_Answer);
                                logger.Info("   node " + ifsfRecipientNode + ", Read one existed product price with product number: "
                                    + resultSetsForOneProduct.Last().ProductNumber
                                  + ", price are: " + resultSetsForOneProduct.OrderBy(a => a.FuelModeId).Select(s => s.Price + " in FM:0x" + s.FuelModeId.ToString("X")).Aggregate((acc, n) => acc + ", " + n));

                                this.productPerFuellingModeDb_ProductPrice_Answers.AddRange(resultSetsForOneProduct);

                                if (this.productDb_ProductNo_Answers.Count() >= ++next_ActualInPump_ProductNumber_In_ProductDb_ProductNoSlot_Index)
                                {
                                    string actualProductNumber = this.productDb_ProductNo_Answers.ElementAt(this.next_ActualInPump_ProductNumber_In_ProductDb_ProductNoSlot_Index - 1).ProductNumber;//this.siteProductBarcodes[next_Clear_ProductNumber_In_Caculator_SlotIndex - 1].ToString();
                                    this.pendingForAckMsgToken = this.msgTokenGenerator();
                                    context.Outgoing.Write(new ProductPerFuellingModeDbRequest_Read_ProductPrice(this.ifsfRecipientSubnet,
                                                  this.ifsfRecipientNode,
                                                  this.ifsfSelfSubnet,
                                                  this.ifsfSelfNode,
                                                  this.pendingForAckMsgToken.Value, actualProductNumber, 0x10));
                                    this.CurrentStatus = Status.Wait_Answer_Read_All_ProductPrice;
                                }
                                else
                                {
                                    next_ActualInPump_ProductNumber_In_ProductDb_ProductNoSlot_Index = 1;
                                    logger.Info("PumpInitializer, node " + ifsfRecipientNode + " Read_All_ProductPrice done!");
                                    var safe = this.OnTqcExistedConfigRead;
                                    safe?.Invoke(this, null);

                                    next_site_nozzle_Index = 1;
                                    logger.Info("PumpInitializer, node " + ifsfRecipientNode + " sending CaculatorDbRequest_Write_Set_AuthStateMode_MinFuelingVol_MinDisplayVol");
                                    this.pendingForAckMsgToken = this.msgTokenGenerator();
                                    context.Outgoing.Write(
                                          new CaculatorDbRequest_Write_Set_AuthStateMode_MinFuelingVol_MinDisplayVol(this.ifsfRecipientSubnet,
                                              this.ifsfRecipientNode,
                                              this.ifsfSelfSubnet,
                                              this.ifsfSelfNode,
                                              this.pendingForAckMsgToken.Value,
                                              CaculatorDbRequest_Write_Set_AuthStateMode_MinFuelingVol_MinDisplayVol.Caculator_Auth_State_Mode.AUTH_State_Allowed));
                                    this.CurrentStatus = Status.Wait_ACK_Set_AUTH_MODE;
                                }
                            }
                            break;
                        }

                    case Status.Wait_ACK_Set_AUTH_MODE:
                        {
                            if (context.Incoming.Message is IfsfMessage ifsfMsg && ifsfMsg.MessageType == MessageType.IFSF_MESSAGE_TYPE_ACK
                                && ifsfMsg.MessageToken == this.pendingForAckMsgToken.Value)
                            {
                                logger.Info("PumpInitializer, node " + ifsfRecipientNode + " CaculatorDbRequest_Write_Set_AuthStateMode_MinFuelingVol_MinDisplayVol Acked.");

                                var targetBarcode = this.thisTqcProductBarcodes[next_Clear_ProductNumber_In_ProductDb_ProductNoSlot_Index - 1];
                                int newInitPriceWithoutDecimalPoints;
                                if (this.PriceBook.ContainsKey(targetBarcode))
                                    newInitPriceWithoutDecimalPoints = this.PriceBook[targetBarcode];
                                else
                                {
                                    // try load the existed pre-configed price value which just read from TQC pump.
                                    var preConfigedPriceOnPump = this.productPerFuellingModeDb_ProductPrice_Answers.FirstOrDefault(p => p.FuelModeId == 0x11 && p.ProductNumber == targetBarcode.ToString().PadLeft(8, '0'))?.Price;
                                    if (string.IsNullOrEmpty(preConfigedPriceOnPump))
                                        newInitPriceWithoutDecimalPoints = 1883 + next_Clear_ProductNumber_In_ProductDb_ProductNoSlot_Index;
                                    else
                                        newInitPriceWithoutDecimalPoints = int.Parse(preConfigedPriceOnPump);
                                    this.PriceBook.Add(targetBarcode, newInitPriceWithoutDecimalPoints);
                                }

                                logger.Info("PumpInitializer, node " + ifsfRecipientNode + " sending ProductPerFuellingModeDbRequest_Write_SetPrice, productNo: "
                                    + targetBarcode.ToString()
                                    + ", new price(without decimalPoints): " + newInitPriceWithoutDecimalPoints.ToString());

                                this.pendingForAckMsgToken = this.msgTokenGenerator();
                                context.Outgoing.Write(
                                      new ProductPerFuellingModeDbRequest_Write_SetPrice(this.ifsfRecipientSubnet,
                                          this.ifsfRecipientNode,
                                          this.ifsfSelfSubnet,
                                          this.ifsfSelfNode,
                                          this.pendingForAckMsgToken.Value,
                                          targetBarcode.ToString(), newInitPriceWithoutDecimalPoints.ToString()
                                          , 0x11)
                                          );
                                this.CurrentStatus = Status.Wait_ACK_Set_Price;
                            }

                            break;
                        }
                    case Status.Wait_ACK_Set_Price:
                        {
                            if (context.Incoming.Message is AcknowledgeMessage ifsfMsg && ifsfMsg.MessageType == MessageType.IFSF_MESSAGE_TYPE_ACK
                                && ifsfMsg.MessageToken == this.pendingForAckMsgToken.Value)
                            {
                                if (ifsfMsg.OverallStatus != MessageAcknowledgeStatus.ACK_PositiveAcknowledgeDataReceived)
                                    logger.Error("   node " + ifsfRecipientNode + ", set price for product failed!");
                                if (this.thisTqcProductBarcodes.Count >= ++next_Clear_ProductNumber_In_ProductDb_ProductNoSlot_Index)
                                {
                                    logger.Info("PumpInitializer, node " + ifsfRecipientNode + " ProductPerFuellingModeDbRequest_Write_SetPrice Acked.");

                                    var targetBarcode = this.thisTqcProductBarcodes[next_Clear_ProductNumber_In_ProductDb_ProductNoSlot_Index - 1];
                                    int newInitPriceWithoutDecimalPoints;
                                    if (this.PriceBook != null && this.PriceBook.ContainsKey(targetBarcode))
                                        newInitPriceWithoutDecimalPoints = this.PriceBook[targetBarcode];
                                    else
                                    {
                                        // try load the existed pre-configed price value which just read from TQC pump.
                                        var preConfigedPriceOnPump = this.productPerFuellingModeDb_ProductPrice_Answers.FirstOrDefault(p => p.FuelModeId == 0x11 && p.ProductNumber == targetBarcode.ToString().PadLeft(8, '0'))?.Price;
                                        if (string.IsNullOrEmpty(preConfigedPriceOnPump))
                                            newInitPriceWithoutDecimalPoints = 1883 + next_Clear_ProductNumber_In_ProductDb_ProductNoSlot_Index;
                                        else
                                            newInitPriceWithoutDecimalPoints = int.Parse(preConfigedPriceOnPump);
                                        this.PriceBook.Add(targetBarcode, newInitPriceWithoutDecimalPoints);
                                    }

                                    logger.Info("PumpInitializer, node " + ifsfRecipientNode + " sending ProductPerFuellingModeDbRequest_Write_SetPrice, productNo: "
                                        + targetBarcode.ToString()
                                        + ", new price(without decimalPoints): " + newInitPriceWithoutDecimalPoints.ToString());

                                    this.pendingForAckMsgToken = this.msgTokenGenerator();
                                    //logger.Info("PumpInitializer, node "+ifsfRecipientNode+" will set product: " + this.siteProductBarcodes[next_Clear_ProductNumber_In_Caculator_SlotIndex - 1].ToString() + " with price " + (1883 + next_Clear_ProductNumber_In_Caculator_SlotIndex).ToString());
                                    context.Outgoing.Write(
                                          new ProductPerFuellingModeDbRequest_Write_SetPrice(this.ifsfRecipientSubnet,
                                              this.ifsfRecipientNode,
                                              this.ifsfSelfSubnet,
                                              this.ifsfSelfNode,
                                              this.pendingForAckMsgToken.Value, targetBarcode.ToString(), newInitPriceWithoutDecimalPoints.ToString(), 0x11)
                                              );
                                    this.CurrentStatus = Status.Wait_ACK_Set_Price;
                                }
                                else
                                {
                                    next_Clear_ProductNumber_In_ProductDb_ProductNoSlot_Index = 1;
                                    logger.Info("PumpInitializer, node " + ifsfRecipientNode + " set product Price(8 products) in fuel mode 0x11 done!");
                                    //this.CurrentStatus = Status.Sending_Set_Nozzle_To_CacalatorSlot;

                                    // now we only have fuelling mode 0x11.
                                    logger.Info("PumpInitializer, node " + ifsfRecipientNode + " Send FuellingPointDbRequest_Write_SetDefaultFuellingMode,\r\n" +
                                        "FP: 0x" + pumpHandlers.ElementAt(next_Fp_Index - 1).PumpPhysicalId.ToHexLogString() + " set to fuelling mode 0x11");
                                    this.pendingForAckMsgToken = this.msgTokenGenerator();
                                    context.Outgoing.Write(
                                        new FuellingPointDbRequest_Write_SetDefaultFuellingMode(this.ifsfRecipientSubnet,
                                              this.ifsfRecipientNode,
                                              this.ifsfSelfSubnet,
                                              this.ifsfSelfNode,
                                              this.pendingForAckMsgToken.Value, (byte)(pumpHandlers.ElementAt(next_Fp_Index - 1).PumpPhysicalId), 1));
                                    this.CurrentStatus = Status.Wait_ACK_Set_FP_Default_FuellingMode;
                                }
                            }

                            break;
                        }
                    case Status.Wait_ACK_Set_FP_Default_FuellingMode:
                        {
                            if (context.Incoming.Message is IfsfMessage ifsfMsg && ifsfMsg.MessageType == MessageType.IFSF_MESSAGE_TYPE_ACK
                                && ifsfMsg.MessageToken == this.pendingForAckMsgToken.Value)
                            {
                                if (++next_Fp_Index <= pumpHandlers.Count())
                                {
                                    logger.Info("PumpInitializer, node " + ifsfRecipientNode + " FuellingPointDbRequest_Write_SetDefaultFuellingMode Acked");


                                    // now we only have fuelling mode 0x11.
                                    logger.Info("PumpInitializer, node " + ifsfRecipientNode + " Send FuellingPointDbRequest_Write_SetDefaultFuellingMode,\r\n" +
                                        "FP Default fuelling mode, FP: 0x" + pumpHandlers.ElementAt(next_Fp_Index - 1).PumpPhysicalId.ToHexLogString());
                                    this.pendingForAckMsgToken = this.msgTokenGenerator();
                                    context.Outgoing.Write(
                                        new FuellingPointDbRequest_Write_SetDefaultFuellingMode(this.ifsfRecipientSubnet,
                                              this.ifsfRecipientNode,
                                              this.ifsfSelfSubnet,
                                              this.ifsfSelfNode,
                                              this.pendingForAckMsgToken.Value, (byte)(pumpHandlers.ElementAt(next_Fp_Index - 1).PumpPhysicalId), 1));
                                    this.CurrentStatus = Status.Wait_ACK_Set_FP_Default_FuellingMode;
                                }
                                else
                                {
                                    next_Fp_Index = 1;
                                    logger.Info("PumpInitializer, node " + ifsfRecipientNode + " set fp default fuelling mode all done!");
                                    logger.Info("PumpInitializer, node " + ifsfRecipientNode + "(pump server ip: " + (comm?.pumpServerTcpListeningIpAddress ?? "") + ") DONE!!!");
                                    this.CurrentStatus = Status.Done;
                                    this.InitDoneTaskCompletionSource.SetResult(true);
                                    var safe = this.OnInitDone;
                                    safe?.Invoke(this, null);
                                }
                            }

                            break;
                        }
                }

                return true;
            }

            public bool IsInitDone => this.CurrentStatus == Status.Done;

            public void Reset()
            {
                this.CurrentStatus = Status.UnInit;
                this.initTimeoutTimer.Stop();
                this.InitDoneTaskCompletionSource = new TaskCompletionSource<bool>();
                this.logicalNozzleDb_Nozzle_ProductInfo_PhyId_Answers.Clear();
                this.productDb_ProductNo_Answers.Clear();
                this.productPerFuellingModeDb_ProductPrice_Answers.Clear();
            }
        }

        #region IDisposable Support

        private bool disposedValue = false; // To detect redundant calls

        protected virtual void Dispose(bool disposing)
        {
            if (!disposedValue)
            {
                if (disposing)
                {
                    // TODO: dispose managed state (managed objects).
                }

                // TODO: free unmanaged resources (unmanaged objects) and override a finalizer below.
                // TODO: set large fields to null.

                disposedValue = true;
            }
        }

        // TODO: override a finalizer only if Dispose(bool disposing) above has code to free unmanaged resources.
        // ~PumpHandler() {
        //   // Do not change this code. Put cleanup code in Dispose(bool disposing) above.
        //   Dispose(false);
        // }

        // This code added to correctly implement the disposable pattern.
        public void Dispose()
        {
            // Do not change this code. Put cleanup code in Dispose(bool disposing) above.
            Dispose(true);
            // TODO: uncomment the following line if the finalizer is overridden above.
            // GC.SuppressFinalize(this);
        }

        IEnumerator<IFdcPumpController> IEnumerable<IFdcPumpController>.GetEnumerator()
        {
            return this.pumpHandlers.GetEnumerator();
        }

        #endregion

    }
}